abstract

• Fractal antennas have been proposed to improve the bandwidth of resonant structures and optical antennas. Their multiband characteristics are of interest in radiofrequency and microwave technologies. In this contribution we link the geometry of the current paths built-in the fractal antenna with the spectral response. We have seen that the actual currents owing through the structure are not limited to the portion of the fractal that should be geometrically linked with the signal. This fact strongly depends on the design of the fractal and how the different scales are arranged within the antenna. Some ideas involving materials that could actively respond to the incoming radiation could be of help to spectrally select the response of the multiband design. © 2015 SPIE.

authors

• Alda J.
• Cuadrado A.
• Ezquerro J.M.
• González Contreras Francisco Javier
• López-Alonso J.M.
• Martinez-Anton J.C.

publication date

• 2015-01-01

published in

• Proceedings of SPIE - The International Society for Optical Engineering  Proceedings

keywords

• fractal antennas; multiband antennas; optical antennas Fractals; Microwave devices; Nanostructures; Optical instruments; Optical properties; Plasmons; Fractal antenna; Microwave technology; Multiband antennas; Multiband characteristics; Optical antennas; Radio frequencies; Resonant structures; Spectral response; Antennas

Digital Object Identifier (DOI)

• 10.1117/12.2187946

start page

end page

volume

• 9547